This is topic Throttle body for my stroker in forum Tech Talk at Northern California Ford Owners  .


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Posted by hard jokur (Member # 3360) on :
 
I currently have a 347 install in progress. With my current setup I'll be using an after market TB, I believe it's a 65mm. While I can still use it I know it will be a source of holding back the motor. SO I'm entertaining a larger TB, 75mm or 70mm. The car is my daily driver and will be mainly street. Any suggestions??
 
Posted by 89bluenotch (Member # 7454) on :
 
75mm
 
Posted by illwill510 (Member # 3788) on :
 
I would match the tb size the the size of the upper intake opening. Some are 70mm openings and others are 75. What intake are u using?
 
Posted by hard jokur (Member # 3360) on :
 
I'm using a GT40 upper/lower.
 
Posted by 427 StRoKeR 94 GT (Member # 8722) on :
 
U should get a better intake. And I believe those are 70Mm
 
Posted by Duncan Motors (Member # 7045) on :
 
heh i havent talked to u in a while how u doin i see ur doin a stroker good deal .
 
Posted by hard jokur (Member # 3360) on :
 
wasap Duncan... Long time no hear! You stilll have the painter with you?? I may need to stop by and discuss some stuff with him.

I'm curious as to why some people dont like the old GT40 intakes?? Each time someone asks my setup I get the opinion that I should upgrade to a different intake?

I'm sure a few people have read this article:

http://www.musclemustangfastfords.com/tech/173_0101_super/index.html

the GT40 did pretty well all around, and should be a good combo for a street motor. My whole intention was to have a stout street motor built so that I can drive my daily and have a little fun while I'm at it.

-Rich
 
Posted by SmokinLX (Member # 1684) on :
 
65 MM should be fine, just make sure You get a spacer.
 
Posted by 92stangLX (Member # 3252) on :
 
quote:
Originally posted by hard jokur:
wasap Duncan... Long time no hear! You stilll have the painter with you?? I may need to stop by and discuss some stuff with him.

I'm curious as to why some people dont like the old GT40 intakes?? Each time someone asks my setup I get the opinion that I should upgrade to a different intake?

I'm sure a few people have read this article:

http://www.musclemustangfastfords.com/tech/173_0101_super/index.html

the GT40 did pretty well all around, and should be a good combo for a street motor. My whole intention was to have a stout street motor built so that I can drive my daily and have a little fun while I'm at it.

-Rich
I don't really understand why people say it's not good. It is designed to make good low-midrange power and does a very good job at it. If you are looking for serious top end then there are other intakes that are better. The GT-40 works even better when you port the lower.
 
Posted by 91fox (Member # 7842) on :
 
heres something i have been using to figure out which throttle body to use

cid x rpm / 3456 = cfm
347 x 6250 /3456 =628cfm
 
Posted by DVUS PNY (Member # 9058) on :
 
75mm should be sufficient. Match it up with the upper intake. Hopefully this was up-graded already.
 




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